<?php
namespace mp_timetable\classes\libs;
	/**
	 * WordPress eXtended RSS file parser implementations
	 *
	 * @package WordPress
	 * @subpackage Importer
	 */

/**
 * WordPress Importer class for managing parsing of WXR files.
 */
class WXR_Parser {
	function parse($file) {

		// Attempt to use proper XML parsers first
		if (extension_loaded('simplexml')) {
			$parser = new WXR_Parser_SimpleXML;
			$result = $parser->parse($file);

			// If SimpleXML succeeds or this is an invalid WXR file then return the results
			if (!is_wp_error($result) || 'SimpleXML_parse_error' != $result->get_error_code())
				return $result;
		} else if (extension_loaded('xml')) {
			$parser = new WXR_Parser_XML;
			$result = $parser->parse($file);

			// If XMLParser succeeds or this is an invalid WXR file then return the results
			if (!is_wp_error($result) || 'XML_parse_error' != $result->get_error_code())
				return $result;
		}

		// We have a malformed XML file, so display the error and fallthrough to regex
		if (isset($result) && defined('IMPORT_DEBUG') && IMPORT_DEBUG) {
			echo '<pre>';
			if ('SimpleXML_parse_error' == $result->get_error_code()) {
				foreach ($result->get_error_data() as $error)
					echo esc_html($error->line) . ':' . esc_html($error->column) . ' ' . esc_html($error->message) . "\n";
			} else if ('XML_parse_error' == $result->get_error_code()) {
				$error = $result->get_error_data();
				echo esc_html($error[0]) . ':' . esc_html($error[1]) . ' ' . esc_html($error[2]);
			}
			echo '</pre>';
			echo '<p><strong>' . __('There was an error when reading this WXR file', 'mp-timetable') . '</strong><br />';
			echo __('Details are shown above. The importer will now try again with a different parser...', 'mp-timetable') . '</p>';
		}

		// use regular expressions if nothing else available or this is bad XML
		$parser = new WXR_Parser_Regex;
		return $parser->parse($file);
	}
}

/**
 * WXR Parser that makes use of the SimpleXML PHP extension.
 */
class WXR_Parser_SimpleXML {
	function parse($file) {
		$authors = $posts = $categories = $tags = $time_slots = $terms = array();

		$internal_errors = libxml_use_internal_errors(true);

		$dom = new \DOMDocument;
		$old_value = null;
		if (function_exists('libxml_disable_entity_loader')) {
			$old_value = libxml_disable_entity_loader(true);
		}
		$success = $dom->loadXML(file_get_contents($file));
		if (!is_null($old_value)) {
			libxml_disable_entity_loader($old_value);
		}

		if (!$success || isset($dom->doctype)) {
			return new \WP_Error('SimpleXML_parse_error', __('There was an error when reading this WXR file', 'mp-timetable'), libxml_get_errors());
		}

		$xml = simplexml_import_dom($dom);
		unset($dom);

		// halt if loading produces an error
		if (!$xml)
			return new \WP_Error('SimpleXML_parse_error', __('There was an error when reading this WXR file', 'mp-timetable'), libxml_get_errors());

		$wxr_version = $xml->xpath('/rss/channel/wp:wxr_version');
		if (!$wxr_version)
			return new \WP_Error('WXR_parse_error', __('This does not appear to be a WXR file, missing/invalid WXR version number', 'mp-timetable'));

		$wxr_version = (string)trim($wxr_version[0]);
		// confirm that we are dealing with the correct file format
		if (!preg_match('/^\d+\.\d+$/', $wxr_version))
			return new \WP_Error('WXR_parse_error', __('This does not appear to be a WXR file, missing/invalid WXR version number', 'mp-timetable'));

		$base_url = $xml->xpath('/rss/channel/wp:base_site_url');
		$base_url = (string)trim($base_url[0]);

		$namespaces = $xml->getDocNamespaces();
		if (!isset($namespaces['wp']))
			$namespaces['wp'] = 'http://wordpress.org/export/1.1/';
		if (!isset($namespaces['excerpt']))
			$namespaces['excerpt'] = 'http://wordpress.org/export/1.1/excerpt/';

		// grab authors
		foreach ($xml->xpath('/rss/channel/wp:author') as $author_arr) {
			$a = $author_arr->children($namespaces['wp']);
			$login = (string)$a->author_login;
			$authors[$login] = array(
				'author_id' => (int)$a->author_id,
				'author_login' => $login,
				'author_email' => (string)$a->author_email,
				'author_display_name' => (string)$a->author_display_name,
				'author_first_name' => (string)$a->author_first_name,
				'author_last_name' => (string)$a->author_last_name
			);
		}

		// grab cats, tags and terms
		foreach ($xml->xpath('/rss/channel/wp:category') as $term_arr) {
			$t = $term_arr->children($namespaces['wp']);
			$categories[] = array(
				'term_id' => (int)$t->term_id,
				'category_nicename' => (string)$t->category_nicename,
				'category_parent' => (string)$t->category_parent,
				'cat_name' => (string)$t->cat_name,
				'category_description' => (string)$t->category_description
			);
		}

		foreach ($xml->xpath('/rss/channel/wp:tag') as $term_arr) {
			$t = $term_arr->children($namespaces['wp']);
			$tags[] = array(
				'term_id' => (int)$t->term_id,
				'tag_slug' => (string)$t->tag_slug,
				'tag_name' => (string)$t->tag_name,
				'tag_description' => (string)$t->tag_description
			);
		}

		foreach ($xml->xpath('/rss/channel/wp:term') as $term_arr) {
			$t = $term_arr->children($namespaces['wp']);
			$terms[] = array(
				'term_id' => (int)$t->term_id,
				'term_taxonomy' => (string)$t->term_taxonomy,
				'slug' => (string)$t->term_slug,
				'term_parent' => (string)$t->term_parent,
				'term_name' => (string)$t->term_name,
				'term_description' => (string)$t->term_description
			);
		}

		// grab posts
		foreach ($xml->channel->item as $item) {
			$post = array(
				'post_title' => (string)$item->title,
				'guid' => (string)$item->guid,
			);

			$dc = $item->children('http://purl.org/dc/elements/1.1/');
			$post['post_author'] = (string)$dc->creator;

			$content = $item->children('http://purl.org/rss/1.0/modules/content/');
			$excerpt = $item->children($namespaces['excerpt']);
			$post['post_content'] = (string)$content->encoded;
			$post['post_excerpt'] = (string)$excerpt->encoded;

			$wp = $item->children($namespaces['wp']);
			$post['post_id'] = (int)$wp->post_id;
			$post['post_date'] = (string)$wp->post_date;
			$post['post_date_gmt'] = (string)$wp->post_date_gmt;
			$post['comment_status'] = (string)$wp->comment_status;
			$post['ping_status'] = (string)$wp->ping_status;
			$post['post_name'] = (string)$wp->post_name;
			$post['status'] = (string)$wp->status;
			$post['post_parent'] = (int)$wp->post_parent;
			$post['menu_order'] = (int)$wp->menu_order;
			$post['post_type'] = (string)$wp->post_type;
			$post['post_password'] = (string)$wp->post_password;
			$post['is_sticky'] = (int)$wp->is_sticky;

			if (isset($wp->attachment_url))
				$post['attachment_url'] = (string)$wp->attachment_url;

			foreach ($item->category as $c) {
				$att = $c->attributes();
				if (isset($att['nicename']))
					$post['terms'][] = array(
						'name' => (string)$c,
						'slug' => (string)$att['nicename'],
						'domain' => (string)$att['domain']
					);
			}

			foreach ($wp->postmeta as $meta) {
				$post['postmeta'][] = array(
					'key' => (string)$meta->meta_key,
					'value' => (string)$meta->meta_value
				);
			}

			foreach ($wp->timeslot as $time) {
				$post['timeslot'][] = array(
					'column' => (string)$time->column,
					'event' => (string)$time->event,
					'event_start' => (string)$time->event_start,
					'event_end' => (string)$time->event_end,
					'user_id' => (string)$time->user_id,
					'description' => (string)$time->description,
				);
			}


			foreach ($wp->comment as $comment) {
				$meta = array();
				if (isset($comment->commentmeta)) {
					foreach ($comment->commentmeta as $m) {
						$meta[] = array(
							'key' => (string)$m->meta_key,
							'value' => (string)$m->meta_value
						);
					}
				}

				$post['comments'][] = array(
					'comment_id' => (int)$comment->comment_id,
					'comment_author' => (string)$comment->comment_author,
					'comment_author_email' => (string)$comment->comment_author_email,
					'comment_author_IP' => (string)$comment->comment_author_IP,
					'comment_author_url' => (string)$comment->comment_author_url,
					'comment_date' => (string)$comment->comment_date,
					'comment_date_gmt' => (string)$comment->comment_date_gmt,
					'comment_content' => (string)$comment->comment_content,
					'comment_approved' => (string)$comment->comment_approved,
					'comment_type' => (string)$comment->comment_type,
					'comment_parent' => (string)$comment->comment_parent,
					'comment_user_id' => (int)$comment->comment_user_id,
					'commentmeta' => $meta,
				);
			}

			$posts[] = $post;
		}
		// grab time_slots
		foreach ($xml->channel->timeslot as $time) {
			$time_slots[] = array(
				'column' => (int)$time->column,
				'event' => (int)$time->event,
				'event_start' => (string)$time->event_start,
				'event_end' => (string)$time->event_end,
				'user_id' => (int)$time->user_id,
				'description' => (string)$time->description,
			);
		}
		return array(
			'authors' => $authors,
			'posts' => $posts,
			'categories' => $categories,
			'tags' => $tags,
			'terms' => $terms,
			'time_slots' => $time_slots,
			'base_url' => $base_url,
			'version' => $wxr_version
		);
	}
}

/**
 * WXR Parser that makes use of the XML Parser PHP extension.
 */
class WXR_Parser_XML {
	var $wp_tags = array(
		'wp:post_id', 'wp:post_date', 'wp:post_date_gmt', 'wp:comment_status', 'wp:ping_status', 'wp:attachment_url',
		'wp:status', 'wp:post_name', 'wp:post_parent', 'wp:menu_order', 'wp:post_type', 'wp:post_password',
		'wp:is_sticky', 'wp:term_id', 'wp:category_nicename', 'wp:category_parent', 'wp:cat_name', 'wp:category_description',
		'wp:tag_slug', 'wp:tag_name', 'wp:tag_description', 'wp:term_taxonomy', 'wp:term_parent',
		'wp:term_name', 'wp:term_description', 'wp:author_id', 'wp:author_login', 'wp:author_email', 'wp:author_display_name',
		'wp:author_first_name', 'wp:author_last_name',
	);
	var $wp_sub_tags = array(
		'wp:comment_id', 'wp:comment_author', 'wp:comment_author_email', 'wp:comment_author_url',
		'wp:comment_author_IP', 'wp:comment_date', 'wp:comment_date_gmt', 'wp:comment_content',
		'wp:comment_approved', 'wp:comment_type', 'wp:comment_parent', 'wp:comment_user_id',
	);

	function parse($file) {
		$this->wxr_version = $this->in_post = $this->cdata = $this->data = $this->sub_data = $this->in_tag = $this->in_sub_tag = false;
		$this->authors = $this->posts = $this->term = $this->category = $this->tag = $this->time_slots = array();

		$xml = xml_parser_create('UTF-8');
		xml_parser_set_option($xml, XML_OPTION_SKIP_WHITE, 1);
		xml_parser_set_option($xml, XML_OPTION_CASE_FOLDING, 0);
		xml_set_object($xml, $this);
		xml_set_character_data_handler($xml, 'cdata');
		xml_set_element_handler($xml, 'tag_open', 'tag_close');

		if (!xml_parse($xml, file_get_contents($file), true)) {
			$current_line = xml_get_current_line_number($xml);
			$current_column = xml_get_current_column_number($xml);
			$error_code = xml_get_error_code($xml);
			$error_string = xml_error_string($error_code);
			return new \WP_Error('XML_parse_error', 'There was an error when reading this WXR file', array($current_line, $current_column, $error_string));
		}
		xml_parser_free($xml);

		if (!preg_match('/^\d+\.\d+$/', $this->wxr_version))
			return new \WP_Error('WXR_parse_error', __('This does not appear to be a WXR file, missing/invalid WXR version number', 'mp-timetable'));

		return array(
			'authors' => $this->authors,
			'posts' => $this->posts,
			'categories' => $this->category,
			'tags' => $this->tag,
			'terms' => $this->term,
			'base_url' => $this->base_url,
			'version' => $this->wxr_version,
			'time_slots' => $this->time_slots
		);
	}

	function tag_open($parse, $tag, $attr) {
		if (in_array($tag, $this->wp_tags)) {
			$this->in_tag = substr($tag, 3);
			return;
		}

		if (in_array($tag, $this->wp_sub_tags)) {
			$this->in_sub_tag = substr($tag, 3);
			return;
		}

		switch ($tag) {
			case 'category':
				if (isset($attr['domain'], $attr['nicename'])) {
					$this->sub_data['domain'] = $attr['domain'];
					$this->sub_data['slug'] = $attr['nicename'];
				}
				break;
			case 'item':
				$this->in_post = true;
			case 'title':
				if ($this->in_post) $this->in_tag = 'post_title';
				break;
			case 'timeslot':
				break;
			case 'column':
				$this->in_tag = 'column';
				break;
			case 'event':
				$this->in_tag = 'event';
				break;
			case 'event_start':
				$this->in_tag = 'event_start';
				break;
			case 'event_end':
				$this->in_tag = 'event_end';
				break;
			case 'user_id':
				$this->in_tag = 'user_id';
				break;
			case 'description':
				$this->in_tag = 'description';
				break;
			case 'guid':
				$this->in_tag = 'guid';
				break;
			case 'dc:creator':
				$this->in_tag = 'post_author';
				break;
			case 'content:encoded':
				$this->in_tag = 'post_content';
				break;
			case 'excerpt:encoded':
				$this->in_tag = 'post_excerpt';
				break;
			case 'wp:term_slug':
				$this->in_tag = 'slug';
				break;
			case 'wp:meta_key':
				$this->in_sub_tag = 'key';
				break;
			case 'wp:meta_value':
				$this->in_sub_tag = 'value';
				break;
		}
	}

	function cdata($parser, $cdata) {
		if (!trim($cdata))
			return;

		$this->cdata .= trim($cdata);
	}

	function tag_close($parser, $tag) {
		switch ($tag) {
			case 'wp:comment':
				unset($this->sub_data['key'], $this->sub_data['value']); // remove meta sub_data
				if (!empty($this->sub_data))
					$this->data['comments'][] = $this->sub_data;
				$this->sub_data = false;
				break;
			case 'wp:commentmeta':
				$this->sub_data['commentmeta'][] = array(
					'key' => $this->sub_data['key'],
					'value' => $this->sub_data['value']
				);
				break;
			case 'category':
				if (!empty($this->sub_data)) {
					$this->sub_data['name'] = $this->cdata;
					$this->data['terms'][] = $this->sub_data;
				}
				$this->sub_data = false;
				break;
			case 'wp:postmeta':
				if (!empty($this->sub_data))
					$this->data['postmeta'][] = $this->sub_data;
				$this->sub_data = false;
				break;
			case 'timeslot':
				$this->time_slots[] = $this->data;
				$this->data = false;
				break;
			case 'item':
				$this->posts[] = $this->data;
				$this->data = false;
				break;
			case 'wp:category':
			case 'wp:tag':
			case 'wp:term':
				$n = substr($tag, 3);
				array_push($this->$n, $this->data);
				$this->data = false;
				break;
			case 'wp:author':
				if (!empty($this->data['author_login']))
					$this->authors[$this->data['author_login']] = $this->data;
				$this->data = false;
				break;
			case 'wp:base_site_url':
				$this->base_url = $this->cdata;
				break;
			case 'wp:wxr_version':
				$this->wxr_version = $this->cdata;
				break;

			default:
				if ($this->in_sub_tag) {
					$this->sub_data[$this->in_sub_tag] = !empty($this->cdata) ? $this->cdata : '';
					$this->in_sub_tag = false;
				} else if ($this->in_tag) {
					$this->data[$this->in_tag] = !empty($this->cdata) ? $this->cdata : '';
					$this->in_tag = false;
				}
		}

		$this->cdata = false;
	}
}

/**
 * WXR Parser that uses regular expressions. Fallback for installs without an XML parser.
 */
class WXR_Parser_Regex {
	var $authors = array();
	var $posts = array();
	var $categories = array();
	var $tags = array();
	var $terms = array();
	var $time_slots = array();
	var $base_url = '';

	function __construct() {
		$this->has_gzip = is_callable('gzopen');
	}

	function parse($file) {
		$wxr_version = $in_post = $in_tag = false;
		$post = $tag = '';
		$fp = $this->fopen($file, 'r');
		if ($fp) {
			while (!$this->feof($fp)) {
				$importline = rtrim($this->fgets($fp));

				if (!$wxr_version && preg_match('|<wp:wxr_version>(\d+\.\d+)</wp:wxr_version>|', $importline, $version))
					$wxr_version = $version[1];

				if (false !== strpos($importline, '<wp:base_site_url>')) {
					preg_match('|<wp:base_site_url>(.*?)</wp:base_site_url>|is', $importline, $url);
					$this->base_url = $url[1];
					continue;
				}
				if (false !== strpos($importline, '<wp:category>')) {
					preg_match('|<wp:category>(.*?)</wp:category>|is', $importline, $category);
					$this->categories[] = $this->process_category($category[1]);
					continue;
				}
				if (false !== strpos($importline, '<wp:tag>')) {
					preg_match('|<wp:tag>(.*?)</wp:tag>|is', $importline, $tag);
					$this->tags[] = $this->process_tag($tag[1]);
					continue;
				}
				if (false !== strpos($importline, '<wp:term>')) {
					preg_match('|<wp:term>(.*?)</wp:term>|is', $importline, $term);
					if (!empty($term)) {
						$this->terms[] = $this->process_term($term[1]);
					} else {
						$in_tag = true;
					}
					continue;
				}

				if (false !== strpos($importline, '</wp:term>')) {
					$tag .= $importline . "\n";
					$this->terms[] = $this->process_term($tag);
					$tag = '';
					$in_tag = false;
					continue;
				}

				if (false !== strpos($importline, '<timeslot>')) {
					preg_match('|<timeslot>(.*?)</timeslot>|is', $importline, $time_slot);
					if (!empty($time_slot)) {
						$this->time_slots[] = $this->process_time_slot($time_slot[1]);
					} else {
						$in_tag = true;
					}
					continue;
				}
				if (false !== strpos($importline, '</timeslot>')) {
					$tag .= $importline . "\n";
					$this->time_slots[] = $this->process_time_slot($tag);
					$tag = '';
					$in_tag = false;
					continue;
				}


				if (false !== strpos($importline, '<wp:author>')) {
					preg_match('|<wp:author>(.*?)</wp:author>|is', $importline, $author);
					$a = $this->process_author($author[1]);
					$this->authors[$a['author_login']] = $a;
					continue;
				}
				if (false !== strpos($importline, '<item>')) {
					$in_post = true;
					continue;
				}
				if (false !== strpos($importline, '</item>')) {
					$in_post = false;
					$this->posts[] = $this->process_post($post);
					continue;
				}
				if ($in_post) {
					$post .= $importline . "\n";
				}

				if ($in_tag) {
					$tag .= $importline . "\n";
				}
			}

			$this->fclose($fp);
		}

		if (!$wxr_version)
			return new \WP_Error('WXR_parse_error', __('This does not appear to be a WXR file, missing/invalid WXR version number', 'mp-timetable'));

		return array(
			'authors' => $this->authors,
			'posts' => $this->posts,
			'categories' => $this->categories,
			'tags' => $this->tags,
			'terms' => $this->terms,
			'base_url' => $this->base_url,
			'version' => $wxr_version,
			'time_slots' => $this->time_slots
		);
	}

	function get_tag($string, $tag) {
		preg_match("|<$tag.*?>(.*?)</$tag>|is", $string, $return);
		if (isset($return[1])) {
			if (substr($return[1], 0, 9) == '<![CDATA[') {
				if (strpos($return[1], ']]]]><![CDATA[>') !== false) {
					preg_match_all('|<!\[CDATA\[(.*?)\]\]>|s', $return[1], $matches);
					$return = '';
					foreach ($matches[1] as $match)
						$return .= $match;
				} else {
					$return = preg_replace('|^<!\[CDATA\[(.*)\]\]>$|s', '$1', $return[1]);
				}
			} else {
				$return = $return[1];
			}
		} else {
			$return = '';
		}
		return $return;
	}

	function process_category($c) {
		return array(
			'term_id' => $this->get_tag($c, 'wp:term_id'),
			'cat_name' => $this->get_tag($c, 'wp:cat_name'),
			'category_nicename' => $this->get_tag($c, 'wp:category_nicename'),
			'category_parent' => $this->get_tag($c, 'wp:category_parent'),
			'category_description' => $this->get_tag($c, 'wp:category_description'),
		);
	}

	function process_tag($t) {
		return array(
			'term_id' => $this->get_tag($t, 'wp:term_id'),
			'tag_name' => $this->get_tag($t, 'wp:tag_name'),
			'tag_slug' => $this->get_tag($t, 'wp:tag_slug'),
			'tag_description' => $this->get_tag($t, 'wp:tag_description'),
		);
	}

	function process_term($t) {
		return array(
			'term_id' => $this->get_tag($t, 'wp:term_id'),
			'term_taxonomy' => $this->get_tag($t, 'wp:term_taxonomy'),
			'slug' => $this->get_tag($t, 'wp:term_slug'),
			'term_parent' => $this->get_tag($t, 'wp:term_parent'),
			'term_name' => $this->get_tag($t, 'wp:term_name'),
			'term_description' => $this->get_tag($t, 'wp:term_description'),
		);
	}

	function process_time_slot($t) {
		return array(
			'column' => $this->get_tag($t, 'column'),
			'event' => $this->get_tag($t, 'event'),
			'event_start' => $this->get_tag($t, 'event_start'),
			'event_end' => $this->get_tag($t, 'event_end'),
			'user_id' => $this->get_tag($t, 'user_id'),
			'description' => $this->get_tag($t, 'description'),
		);
	}

	function process_author($a) {
		return array(
			'author_id' => $this->get_tag($a, 'wp:author_id'),
			'author_login' => $this->get_tag($a, 'wp:author_login'),
			'author_email' => $this->get_tag($a, 'wp:author_email'),
			'author_display_name' => $this->get_tag($a, 'wp:author_display_name'),
			'author_first_name' => $this->get_tag($a, 'wp:author_first_name'),
			'author_last_name' => $this->get_tag($a, 'wp:author_last_name'),
		);
	}

	function process_post($post) {
		$post_id = $this->get_tag($post, 'wp:post_id');
		$post_title = $this->get_tag($post, 'title');
		$post_date = $this->get_tag($post, 'wp:post_date');
		$post_date_gmt = $this->get_tag($post, 'wp:post_date_gmt');
		$comment_status = $this->get_tag($post, 'wp:comment_status');
		$ping_status = $this->get_tag($post, 'wp:ping_status');
		$status = $this->get_tag($post, 'wp:status');
		$post_name = $this->get_tag($post, 'wp:post_name');
		$post_parent = $this->get_tag($post, 'wp:post_parent');
		$menu_order = $this->get_tag($post, 'wp:menu_order');
		$post_type = $this->get_tag($post, 'wp:post_type');
		$post_password = $this->get_tag($post, 'wp:post_password');
		$is_sticky = $this->get_tag($post, 'wp:is_sticky');
		$guid = $this->get_tag($post, 'guid');
		$post_author = $this->get_tag($post, 'dc:creator');

		$post_excerpt = $this->get_tag($post, 'excerpt:encoded');
		$post_excerpt = preg_replace_callback('|<(/?[A-Z]+)|', array(&$this, '_normalize_tag'), $post_excerpt);
		$post_excerpt = str_replace('<br>', '<br />', $post_excerpt);
		$post_excerpt = str_replace('<hr>', '<hr />', $post_excerpt);

		$post_content = $this->get_tag($post, 'content:encoded');
		$post_content = preg_replace_callback('|<(/?[A-Z]+)|', array(&$this, '_normalize_tag'), $post_content);
		$post_content = str_replace('<br>', '<br />', $post_content);
		$post_content = str_replace('<hr>', '<hr />', $post_content);

		$postdata = compact('post_id', 'post_author', 'post_date', 'post_date_gmt', 'post_content', 'post_excerpt',
			'post_title', 'status', 'post_name', 'comment_status', 'ping_status', 'guid', 'post_parent',
			'menu_order', 'post_type', 'post_password', 'is_sticky'
		);

		$attachment_url = $this->get_tag($post, 'wp:attachment_url');
		if ($attachment_url)
			$postdata['attachment_url'] = $attachment_url;

		preg_match_all('|<category domain="([^"]+?)" nicename="([^"]+?)">(.+?)</category>|is', $post, $terms, PREG_SET_ORDER);
		foreach ($terms as $t) {
			$post_terms[] = array(
				'slug' => $t[2],
				'domain' => $t[1],
				'name' => str_replace(array('<![CDATA[', ']]>'), '', $t[3]),
			);
		}
		if (!empty($post_terms)) $postdata['terms'] = $post_terms;

		preg_match_all('|<wp:comment>(.+?)</wp:comment>|is', $post, $comments);
		$comments = $comments[1];
		if ($comments) {
			foreach ($comments as $comment) {
				preg_match_all('|<wp:commentmeta>(.+?)</wp:commentmeta>|is', $comment, $commentmeta);
				$commentmeta = $commentmeta[1];
				$c_meta = array();
				foreach ($commentmeta as $m) {
					$c_meta[] = array(
						'key' => $this->get_tag($m, 'wp:meta_key'),
						'value' => $this->get_tag($m, 'wp:meta_value'),
					);
				}

				$post_comments[] = array(
					'comment_id' => $this->get_tag($comment, 'wp:comment_id'),
					'comment_author' => $this->get_tag($comment, 'wp:comment_author'),
					'comment_author_email' => $this->get_tag($comment, 'wp:comment_author_email'),
					'comment_author_IP' => $this->get_tag($comment, 'wp:comment_author_IP'),
					'comment_author_url' => $this->get_tag($comment, 'wp:comment_author_url'),
					'comment_date' => $this->get_tag($comment, 'wp:comment_date'),
					'comment_date_gmt' => $this->get_tag($comment, 'wp:comment_date_gmt'),
					'comment_content' => $this->get_tag($comment, 'wp:comment_content'),
					'comment_approved' => $this->get_tag($comment, 'wp:comment_approved'),
					'comment_type' => $this->get_tag($comment, 'wp:comment_type'),
					'comment_parent' => $this->get_tag($comment, 'wp:comment_parent'),
					'comment_user_id' => $this->get_tag($comment, 'wp:comment_user_id'),
					'commentmeta' => $c_meta,
				);
			}
		}
		if (!empty($post_comments)) $postdata['comments'] = $post_comments;

		preg_match_all('|<wp:postmeta>(.+?)</wp:postmeta>|is', $post, $postmeta);
		$postmeta = $postmeta[1];
		if ($postmeta) {
			foreach ($postmeta as $p) {
				$post_postmeta[] = array(
					'key' => $this->get_tag($p, 'wp:meta_key'),
					'value' => $this->get_tag($p, 'wp:meta_value'),
				);
			}
		}
		if (!empty($post_postmeta)) $postdata['postmeta'] = $post_postmeta;

		preg_match_all('|<wp:timeslot>(.+?)</wp:timeslot>|is', $post, $timeslot);
		$timeslot = $timeslot[1];
		if ($timeslot) {
			foreach ($timeslot as $p) {
				$post_ptimeslot[] = array(
					'column' => $this->get_tag($p, 'wp:column'),
					'event' => $this->get_tag($p, 'wp:event'),
					'event_start' => $this->get_tag($p, 'wp:event_start'),
					'event_end' => $this->get_tag($p, 'wp:event_end'),
					'user_id' => $this->get_tag($p, 'wp:user_id'),
					'description' => $this->get_tag($p, 'wp:description')
				);
			}
		}
		if (!empty($post_timeslot)) $postdata['timeslot'] = $post_timeslot;

		return $postdata;
	}

	function _normalize_tag($matches) {
		return '<' . strtolower($matches[1]);
	}

	function fopen($filename, $mode = 'r') {
		if ($this->has_gzip)
			return gzopen($filename, $mode);
		return fopen($filename, $mode);
	}

	function feof($fp) {
		if ($this->has_gzip)
			return gzeof($fp);
		return feof($fp);
	}

	function fgets($fp, $len = 8192) {
		if ($this->has_gzip)
			return gzgets($fp, $len);
		return fgets($fp, $len);
	}

	function fclose($fp) {
		if ($this->has_gzip)
			return gzclose($fp);
		return fclose($fp);
	}
}
